Not So Great Lakes?

Steve Curwood talks with Michael Gilbertson, a biologist with the International Joint Commission which oversees Great Lakes cleanup. on the 25th anniversary of the joint U.S. – Canadian agreement to clean up the Great Lakes. Lakes Michigan, Erie, Ontario, Superior, and Huron together hold one fifth of the world’s fresh water and Gilbertson says one of the most intriguing new findings concerns trout in Lake Ontario.